Why Green (or Pink/White) Lines Appear on Smartphone Displays – Explained!

Hey iQOO Community 👋

You might’ve seen or heard about the green line issue affecting many smartphones lately — but what exactly causes it? 🤔

Let’s break it down in detail so everyone understands what’s going on and how to deal with it if it ever happens. 👇

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📌 What is the Green Line Issue?

A vertical green (or sometimes pink/white) line on AMOLED displays usually appears due to a hardware failure, not a software glitch. It’s caused when a row or column of pixels gets stuck in the “on” position due to a fault in the display connector, transistor, or circuit line.

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⚠️ Why Does It Happen?

Display connector fault – Loose or damaged display cables can cause pixel issues.

OTA update triggers – Not the update itself, but the heat or power fluctuations during an update may trigger it.

Overheating – Long gaming sessions, fast charging, or ambient heat can damage fragile display circuits.

Manufacturing issues – Weak soldering or internal stress in some panels can fail over time.

Climate stress – Hot & humid regions like India speed up the aging of OLED displays.

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📱 Brands & Phones Affected

Many brands have faced this, including:

Samsung – Galaxy S21, S21 FE, Note 20 Ultra, etc.

OnePlus – 8, 9, 10 Pro, Nord CE, 11 & 12.

Motorola, Vivo, Xiaomi, iPhones & others with AMOLED displays.

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🔍 Signs & Symptoms

A straight, vertical line appears — mostly green, but can also be pink or white.

Often shows up after reboot, software update, or long gaming/charging sessions.

Stays even after restarting, safe mode, or reset — confirming it’s not software-related.

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🛠️ Can It Be Fixed?

Yes, but only with a display replacement. No setting, reset, or app can fix a physically damaged OLED panel.

Check if your brand offers support:

OnePlus India: Lifetime free display replacement for green line issue (even out of warranty).

Samsung India: Free one-time screen replacement for select models.

Others: Depends on warranty and service policy.

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🧼 Prevention Tips

Avoid using the phone while charging or during hot weather.

Don’t overload the phone with gaming/updates during heat.

Use DC Dimming if available to reduce display stress.

Handle your phone carefully — no pressure on the screen edges.

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📝 TL;DR – Quick Summary:

📍 Green/Pink/White lines = OLED display hardware fault.

🔥 Triggered by heat, OTA updates, or long-term stress.

🛠️ Only fix is screen replacement, not a software update.

✅ Some brands like OnePlus (India) offer lifetime free replacement.

📲 If it ever appears on your iQOO device, visit the service center quickly to avoid more damage.

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Let me know in comments 👇

Have you ever faced this issue?

And do you think brands should offer lifetime screen support for AMOLED panels? 

@iQOO Connect